1 /* $NetBSD: drm_sarea.h,v 1.2 2021/12/18 23:45:46 riastradh Exp $ */ 2 3 /** 4 * \file drm_sarea.h 5 * \brief SAREA definitions 6 * 7 * \author Michel Dänzer <michel@daenzer.net> 8 */ 9 10 /* 11 * Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas. 12 * All Rights Reserved. 13 * 14 * Permission is hereby granted, free of charge, to any person obtaining a 15 * copy of this software and associated documentation files (the "Software"), 16 * to deal in the Software without restriction, including without limitation 17 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 18 * and/or sell copies of the Software, and to permit persons to whom the 19 * Software is furnished to do so, subject to the following conditions: 20 * 21 * The above copyright notice and this permission notice (including the next 22 * paragraph) shall be included in all copies or substantial portions of the 23 * Software. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 28 * TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 29 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 30 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 31 * OTHER DEALINGS IN THE SOFTWARE. 32 */ 33 34 #ifndef _DRM_SAREA_H_ 35 #define _DRM_SAREA_H_ 36 37 #include "drm.h" 38 39 #if defined(__cplusplus) 40 extern "C" { 41 #endif 42 43 /* SAREA area needs to be at least a page */ 44 #if defined(__alpha__) 45 #define SAREA_MAX 0x2000U 46 #elif defined(__mips__) 47 #define SAREA_MAX 0x4000U 48 #elif defined(__ia64__) 49 #define SAREA_MAX 0x10000U /* 64kB */ 50 #else 51 /* Intel 830M driver needs at least 8k SAREA */ 52 #define SAREA_MAX 0x2000U 53 #endif 54 55 /** Maximum number of drawables in the SAREA */ 56 #define SAREA_MAX_DRAWABLES 256 57 58 #define SAREA_DRAWABLE_CLAIMED_ENTRY 0x80000000 59 60 /** SAREA drawable */ 61 struct drm_sarea_drawable { 62 unsigned int stamp; 63 unsigned int flags; 64 }; 65 66 /** SAREA frame */ 67 struct drm_sarea_frame { 68 unsigned int x; 69 unsigned int y; 70 unsigned int width; 71 unsigned int height; 72 unsigned int fullscreen; 73 }; 74 75 /** SAREA */ 76 struct drm_sarea { 77 /** first thing is always the DRM locking structure */ 78 struct drm_hw_lock lock; 79 /** \todo Use readers/writer lock for drm_sarea::drawable_lock */ 80 struct drm_hw_lock drawable_lock; 81 struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES]; /**< drawables */ 82 struct drm_sarea_frame frame; /**< frame */ 83 drm_context_t dummy_context; 84 }; 85 86 #ifndef __KERNEL__ 87 typedef struct drm_sarea_drawable drm_sarea_drawable_t; 88 typedef struct drm_sarea_frame drm_sarea_frame_t; 89 typedef struct drm_sarea drm_sarea_t; 90 #endif 91 92 #if defined(__cplusplus) 93 } 94 #endif 95 96 #endif /* _DRM_SAREA_H_ */ 97